Results 11 to 20 of about 428,509 (269)

Flexible Trees [PDF]

open access: yesProceedings of the International Working Conference on Advanced Visual Interfaces, 2016
We introduce Flexible Trees, a sketch-based layout adjustment technique. Although numerous tree layout algorithms exist, these algorithms are usually bound to fit within standard shapes such as rectangles, circles and triangles. In order to provide the possibility of interactively customizing a tree layout, we offer a free-form sketch-based interaction
Sadeghi, Javad   +4 more
openaire   +3 more sources

Tree compression with top trees [PDF]

open access: yesInformation and Computation, 2013
We introduce a new compression scheme for labeled trees based on top trees. Our compression scheme is the first to simultaneously take advantage of internal repeats in the tree (as opposed to the classical DAG compression that only exploits rooted subtree repeats) while also supporting fast navigational queries directly on the compressed representation.
Bille, Philip   +3 more
openaire   +4 more sources

Hash Trees Versus B-Trees [PDF]

open access: yesThe Computer Journal, 1984
Summary: The hash trees method of external hashing is known to have advantages for certain types of primary key distribution. In this paper the value of the method as a general indexing technique - for secondary keys as well as primary keys - is assessed, and comparison with the B-trees method is presented.
Bell, D. A., Deen, S. M.
openaire   +1 more source

Pairs of trees in tree–tree triangulations

open access: yesDiscrete Mathematics, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schaar, Günter, Skupień, Zdzisław
openaire   +2 more sources

Comparative analysis of flavonoids, polyphenols and volatiles in roots, stems and leaves of five mangroves [PDF]

open access: yesPeerJ, 2023
Mangrove plants contain a variety of secondary metabolites, including flavonoids, polyphenols, and volatiles, which are important for their survival and adaptation to the coastal environment, as well as for producing bioactive compounds.
Zhihua Wu   +3 more
doaj   +2 more sources

Gelidocalamus xunwuensis (Poaceae, Bambusoideae), a new species from southeastern Jiangxi, China

open access: yesPhytoKeys, 2017
Gelidocalamus xunwuensis W.G.Zhang & G.Y.Yang, a new species collected from Xunwu County of Jiangxi Province in China, is described and illustrated. The new species is similar to G. stellatus in the habit, but differs by internodes sparsely hairy
Wen-Gen Zhang   +4 more
doaj   +3 more sources

Transcriptome analysis identifies genes involved in the somatic embryogenesis of Eucalyptus

open access: yesBMC Genomics, 2020
Background Eucalyptus, a highly diverse genus of the Myrtaceae family, is the most widely planted hardwood in the world due to its increasing importance for fiber and energy.
Yufei Xiao   +6 more
doaj   +1 more source

Rosa funingensis (Rosaceae), a new species from Yunnan, China [PDF]

open access: yesPhytoKeys, 2023
A new species Rosa funingensis and its variant R. funingensis f. rosea, both collected from Yunnan Province, China, are, for the first time, documented and illustrated in this study.
Ling-Na Zheng   +7 more
doaj   +3 more sources

Salinity tolerance improvement of in vitro propagated Paulownia tomentosa using proline

open access: yesBulletin of the National Research Centre, 2020
Background Paulownia tomentosa has been used as an ornamental plant and is still vastly used for this objective and can be utilized for the production of energy, wooden building materials, and paper pulp.
Nora Muhammad Youssef   +2 more
doaj   +1 more source

Categorizing Ideas about Trees: A Tree of Trees

open access: yesPLoS ONE, 2013
The aim of this study is to explore whether matrices and MP trees used to produce systematic categories of organisms could be useful to produce categories of ideas in history of science. We study the history of the use of trees in systematics to represent the diversity of life from 1766 to 1991.
Marie Fisler, Guillaume Lecointre
openaire   +4 more sources

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